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Reduction Iron Electric Furnace

원래 장소 중국
브랜드 이름 Shaanxi Chengda
인증 ISO 9001
모델 번호 장비 처리 능력을 기준으로 협의
최소 주문 수량 1개 단위
가격 The price will be negotiated based on the technical requirements and supply scope of Party A
포장 세부 사항 당사자 A의 특정 요구 사항에 따라 논의
배달 시간 2개월
지불 조건 L/C, T/T, 웨스턴 유니온
공급 능력 생산 공급망을 완성하고 적시에 공급하며 품질 표준을 충족합니다.
제품 상세 정보
강조하다

electric reduction iron furnace

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Reduction Iron Electric Furnace


Equipment Introduction & Technical Parameters


Reduction Iron Electric Furnace (also known as Direct Reduction Iron Electric Furnace, Smelting Reduction Furnace, Submerged Arc Reduction Furnace) is a key metallurgical equipment that uses electric energy as the heat source to reduce iron ore (or iron concentrate, pellets) into metallic iron (Direct Reduced Iron DRI / Sponge Iron or molten pig iron) at high temperatures.

Different from traditional blast furnaces, it does not require coke and mainly relies on carbonaceous reductants (coal/coke) and electric heat. It is widely used in electric furnace steelmaking, precision casting, etc.



1. Equipment Classification & Structure


1.1 Main Types


  • Submerged Arc Reduction Furnace (Mineral Heat Furnace): The most mainstream type. Electrodes are buried in charge, heated by electric arc + resistance heat, closed/semi-closed, for large-scale continuous production.
  • Smelting Reduction Furnace (e.g., SRV Furnace): Integrates prereduction and final reduction, directly producing liquid hot metal with high capacity.
  • Shaft Furnace Type Reduction Electric Furnace: Gas-based + electric heating, producing solid sponge iron (DRI).

1.2 Main Components (Submerged Arc Type)


  1. Power Supply System

    • Furnace transformer (low voltage, high current, on-load voltage regulation)
    • Short network, high/low voltage cabinet, reactive power compensation

  2. Electrode System

    • Soderberg / graphite electrode, electrode holder, lifting & slipping device

  3. Furnace Body System

    • Furnace shell (steel plate), furnace lining (carbon/magnesia refractory)
    • Tap hole & slag hole

  4. Auxiliary Systems

    • Water cooling system
    • Feeding system
    • Flue gas purification & waste heat recovery




2. Working Principle


  1. Heat Source: Electric arc (3000–6000°C) + resistance heat in burden.
  2. Reduction Reactions:
  3. Process: Preheating → high-temperature reduction → slag-iron separation → tapping.



3. Typical Technical Parameters


3.1 Electrical Parameters



Parameter Range Description
Transformer Capacity 6,300 – 75,000 kVA Higher capacity = higher output
Secondary Voltage 80 – 290 V Low voltage, high current
Secondary Current 20,000 – 80,000 A Phase current
Power Factor ≥ 0.9 With compensation

3.2 Furnace & Electrode Parameters (33,000 kVA example)


  • Furnace shell: round, OD 10–12 m, height 3.5–5.0 m
  • Furnace chamber: diameter 7–9 m, depth 2.5–3.5 m
  • Electrodes: 3 pieces, triangular arrangement, Φ1.2–1.5 m
  • Electrode circle diameter: 4.0–5.5 m
  • Lining life: 3–7 years

3.3 Capacity & Consumption


  • Daily output: 200–800 t/d
  • Annual capacity: 60,000 – 250,000 t/y
  • Power consumption: 2,400 – 3,800 kWh/t DRI
  • Reductant: 450 – 650 kg/t
  • Flux (lime/dolomite): 150 – 300 kg/t



4. Features & Advantages


  • Flexible raw materials: Uses ore, pellets, coal; no coke required.
  • High-quality product: Low S/P, high purity, ideal for EAF steelmaking.
  • Short process, low pollution: No coking or sintering, lower CO₂ emissions.
  • Stable control: Precise electric heating, stable temperature & atmosphere.
  • Wide capacity range: From small (6,300 kVA) to large (75,000 kVA).